Journal of Industrial and Engineering Chemistry, Vol.45, 404-412, January, 2017
Development of fluorescence-conjugated islet-homing peptide using biopanning for targeted optical imaging of pancreatic islet
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Visualization of pancreatic islet can provide important information for diagnosis and monitoring of
pancreatic islets. By using phage display technology, here we newly identified four candidate peptide sequences with islet-homing property. In vitro binding assay showed that LSALPRT peptide had stronger affinity with islet cells than other candidates. Then this islet-homing peptide (IHP) was chemically conjugated with TAMRA fluorophore for near infrared (NIR) imaging of islet cells. This TMARA-IHP was strongly bound to islets in vitro, but also to cryo-sectioned slice of pancreas tissue ex vivo. Collectively, it would be a considerable potential as therapeutics or diagnostics in future studies.
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